Gas-relief valve for oil-wells.



Patented Aug. 28,' 1917.

D. M. LYNN.

GAS RELIEF VALVE FOR OIL WELLS.

Y APPLICATION FILED' JAN. x4. |916. 1,238,165.

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INVENTOR l Ammer DANIEL IVI. LYNN, OF GLINTONVILLE, PENNSYLVANIA.

GAS-RELIEF VALVE FOR OIL-WELLS.

Specification of Letters Patent.

Patented Aug'. 28, 1917.

Application led January 14, 1916. Serial No. 72,132.

To all rwhom t may concern:

Be it known that I, DANIEL M, LYNN,` citizen of the United States,residing at Clintonville, in the county of Venango and State ofPennsylvania, have invented certain new and useful Improvements inGas-Relief Valves for Oil-Wells, of which the following is aspecification.

The object, construction and utility of this invention are herein setforth with sufcient clearness, to enable those skilled in the art of oilproduction, to make and use the same.

The obj ect of this invention is to simplify the equipment of oil wells,and reduce the cost of such equipment by eliminating the gas pipethrough which gas is conducted from the inclosed chamber of the well,beneath the packer, where the oil production of the well gathers.

In nearly all oil wells a wall-packer is used, which is located abovethe oil-producing stratum, for the purpose of preventingl water frompassing downward from the higher, water-producing strata, into the loweroil-producing stratum. Where a well is equipped with such wall-packer,it is necessary to provide a gas-escape passage through the packer, forthe escape of gas therethrough.

This invention provides a gas-relief valve, whereby the gas in the oilchamber of the well is permitted to pass into, and escape through theoil-tubing of the well, thus dispensing with the usual gas escapepassage through the packer and the pipe connected therewith, and in thisrespect, and to such extent, the equipment of the well is simplified andreduced in cost.

I am aware that certain packers for oil wells have been invented whichcontain valves that are adapted to permit the escape of gas from the oilchamber of the well into the tubing, such a packer being shown inLetters Patent of the United States to Griffin, No. 1,149,751, datedAug. 10, 1915, and in Letters Patent of the United States to McNallen,No. 1,164,655, dated Dec. 21, 1915. Inasrnuch, however, as the valvesshown in said patents are not independent of the packer, but are astructural part thereof, and cannot be employed independently of thepacker, as can my valve, I hereby speciically disclaim suchconstruction: My valve may be interposed directly in the tubing and em.

arranged to be connected to the lower end of a wallpacker 2. The lowerend of said body 1 is adapted for the attachment of the tubing 3, whichextends downward into the fluid 4 in the well, and the lower end ofwhich tubing usually rests upon the bottom of the hole.

Leading from the duct in body 1, is a lateral, vertically-extendingbranch duct 5, which is provided with a downwardly-disposed opening,into which is inserted a valve-seat 6, with which a suitable valve, as 7coperates.

As the well is pumped, the fluid production of the well passes upthrough said tubing 3, and when the pressure of gas in the fluid cavity8 beneath the packer becomes sufficiently high, it unseats said valve 7and passes into said lateral branch 5, thence into the tubing 3, throughwhich it escapes from the well.

It is necessary to the proper working of the valve that it be positionedabove the fluid 4 in the oil-chamber 8 of the well, but it may bepositioned anywhere above the surface of the fluid and below thewall-packer 2, or such equivalent of said packer as may be employed.

I claim the following:

1. The combination with the tubing of a well having a wall-packerconnected thereto, of a gas-escape valve connected to said tubing,positioned intermediate said packer and the fluid of the well andadapted for the escape of gas from the well through said tubing; saidvalve comprising a suitable body having a valve-closed opening for theentrance of gas thereinto and into the tubtioned intermediate saidpacker and the fluid ing to Which said Valve is connected. of the Wellwhich is beneath said packer.

2. The combination With the tubing of a In testimony whereof- I aiiiX mysignature Well and the Wall-packer connected to such in presence of twoWitnesses.

.5 tubing7 of a gas-escape valve Connected to DANIEL M. LYNN.

such tubing, and adapted for the escape of Witnesses: gas from theoil-chamber of such Well E. R. INMAN, through said tubing, said Valveybeing posi- M. R. HENDERSON.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of E'atents, Washington, D. G.

